613603680 has 48 divisors (see below), whose sum is σ = 1932853104. Its totient is φ = 163627520.

The previous prime is 613603633. The next prime is 613603681. The reversal of 613603680 is 86306316.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×613603680² = 753018952219084800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613603681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638691 + ... + 639650.

It is an arithmetic number, because the mean of its divisors is an integer number (40267773).

Almost surely, 2^613603680 is an apocalyptic number.

613603680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613603680 is an abundant number, since it is smaller than the sum of its proper divisors (1319249424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613603680 is a wasteful number, since it uses less digits than its factorization.

613603680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278359 (or 1278351 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 613603680 is about 24771.0250090706. The cubic root of 613603680 is about 849.7594151867.

Adding to 613603680 its reverse (86306316), we get a palindrome (699909996).

The spelling of 613603680 in words is "six hundred thirteen million, six hundred three thousand, six hundred eighty".